6.6 Interval for hyperfine structure
The $3d^5 4s4p^6 P_{7/2}$ level of $^{55}Mn$ is split by hyperfine interaction into six levels that have separations 2599, 2146, 1696, 1258 and 838 MHz. Deduce the nuclear spin of $^{55}Mn$ and show that the separations confirm your value.